/*******************************************************************************
 * Copyright (c) 2000, 2009 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * Contributors:
 * IBM Corporation - initial API and implementation
 *******************************************************************************/
package cn.elwy.rcp.ui.navigator.internal.resources.actions;

import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.internal.navigator.INavigatorHelpContextIds;

/**
 * Implements the go to resource action. Opens a dialog and set the navigator selection with the resource selected by
 * the user.
 */
@SuppressWarnings("restriction")
public class GotoResourceAction extends Action {

  protected Shell shell;

  protected TreeViewer viewer;

  /**
   * @param shell
   * @param viewer
   */
  public GotoResourceAction(Shell shell, TreeViewer viewer) {
    this.shell = shell;
    this.viewer = viewer;
    PlatformUI.getWorkbench().getHelpSystem().setHelp(this, INavigatorHelpContextIds.GOTO_RESOURCE_ACTION);
  }

  /**
   * Collect all resources in the workbench open a dialog asking the user to select a resource and change the selection
   * in the navigator.
   */
  public void run() {
    GotoResourceDialog dialog = new GotoResourceDialog(shell, ResourcesPlugin.getWorkspace().getRoot(), IResource.FILE
        | IResource.FOLDER | IResource.PROJECT);
    dialog.open();
    Object[] result = dialog.getResult();
    if (result == null || result.length == 0 || result[0] instanceof IResource == false) {
      return;
    }

    IResource selection = (IResource) result[0];
    viewer.setSelection(new StructuredSelection(selection), true);
  }
}
